diff --git a/pkgs/development/libraries/haskell/shell-conduit/default.nix b/pkgs/development/libraries/haskell/shell-conduit/default.nix
index 23ce1522254..bbac214625e 100644
--- a/pkgs/development/libraries/haskell/shell-conduit/default.nix
+++ b/pkgs/development/libraries/haskell/shell-conduit/default.nix
@@ -1,16 +1,16 @@
 # This file was auto-generated by cabal2nix. Please do NOT edit manually!
 
-{ cabal, conduit, conduitExtra, controlMonadLoop, filepath
+{ cabal, async, conduit, conduitExtra, controlMonadLoop, filepath
 , monadControl, monadsTf, resourcet, semigroups, split, text, these
 , transformers, transformersBase
 }:
 
 cabal.mkDerivation (self: {
   pname = "shell-conduit";
-  version = "3.0";
-  sha256 = "07x920j52zjqh3lpfam5f1nhsgqbcgz458dbrwxsmsn3cnqf2qd6";
+  version = "4.2";
+  sha256 = "1ac1imsz1ffm0ldi29ylprgs4zh0qhn52ka17zn8f9301hfx9vhc";
   buildDepends = [
-    conduit conduitExtra controlMonadLoop filepath monadControl
+    async conduit conduitExtra controlMonadLoop filepath monadControl
     monadsTf resourcet semigroups split text these transformers
     transformersBase
   ];